本文選題：非真實感渲染 + 敦煌壁畫　； 參考：《西北民族大學》2017年碩士論文

【摘要】：本文的主旨在于實現(xiàn)敦煌壁畫的鉛筆畫渲染,進一步提升敦煌壁畫的藝術、宗教、社會價值,保護和傳承敦煌壁畫。主要研究工作如下:1)敦煌壁畫的平滑預處理。本文提出使用LO平滑技術平滑敦煌壁,該方法可以降低壁畫的粗糙感,還可以在一定程度修復敦煌壁畫。本文經過對比實驗證明了 LO平滑方法的優(yōu)越性,該方法可以在平滑圖像的同時保留邊界信息,是一種非常適合敦煌壁畫的平滑方法。2)敦煌壁畫的邊界提取。對敦煌壁畫進行平滑處理后,使用改進的Roberts算子提取圖像邊界。經過平滑處理后壁畫中的噪聲被平滑掉了,所以選擇定位精度高但對噪聲敏感的Roberts算子。與其他邊界提取算子相比Roberts算子運算耗時最短、邊界提取結果最好。3)提出了不進行色調調整的鉛筆畫渲染方法。敦煌壁畫作為一種古代畫家傳承至今的手繪藝術作品,其色調分布、明暗變化都有其獨特的藝術價值。對敦煌壁畫進行色調調整必然會破壞其藝術價值。針對敦煌壁畫與普通圖像之間的巨大差異,本文在渲染過程中并沒有對敦煌壁畫進行色調調整。4)使用基于真實紋理的渲染方法進行紋理渲染。現(xiàn)階段主流的LIC方法耗時耗力。而基于真實紋理的渲染方法只需選取適當?shù)你U筆畫紋理就可以快速地實現(xiàn)敦煌壁畫的紋理渲染。5)彩色鉛筆畫渲染的實現(xiàn)。通過RGB空間與YUV空間之間的相互轉換獲取彩色鉛筆畫渲染結果。實驗證明,通過本文算法實現(xiàn)了對敦煌壁畫的鉛筆畫渲染。渲染結果中壁畫粗糙、破損的部分得到了修復,壁畫的視覺效果得到了明顯提升。雖然壁畫變成了鉛筆畫形式,添加了鉛筆畫紋理,但是其色調分布,明暗變化等并沒有發(fā)生改變,其藝術價值得到了充分保留。
[Abstract]:The main purpose of this paper is to realize the pencil-painting rendering of Dunhuang murals, to further enhance the art, religion, social value of Dunhuang murals, and to protect and inherit Dunhuang murals. The main research work is as follows: (1) smooth pretreatment of Dunhuang murals. In this paper, the Lo smoothing technique is proposed to smooth the Dunhuang wall, which can reduce the roughness of the murals and repair the Dunhuang murals to a certain extent. This paper proves the superiority of Lo smoothing method, which can keep the boundary information while smoothing the image. It is a very suitable smoothing method for Dunhuang murals. 2) the boundary extraction of Dunhuang murals. After smoothing the Dunhuang murals, the improved Roberts operator is used to extract the image boundary. After smoothing, the noise in the murals is smoothed out, so the Roberts operator with high accuracy and sensitivity to noise is chosen. Compared with other edge extraction operators Roberts operator has the shortest computation time and the best edge extraction result. 3) A pencil-drawing rendering method without hue adjustment is proposed. Dunhuang murals, as a hand-painted work inherited by ancient painters, have their unique artistic value. Color adjustment of Dunhuang murals will inevitably destroy its artistic value. In view of the huge difference between Dunhuang murals and ordinary images, this paper does not adjust the color of Dunhuang murals in the process of rendering. 4) texture rendering method based on real texture is used. The current mainstream LIC method is time-consuming and labor-intensive. However, the rendering method based on real texture can quickly realize the texture rendering of Dunhuang murals. 5) Color pencil painting rendering can be realized by selecting the appropriate pencil-drawing texture. The color pencil-drawing rendering results are obtained by the conversion between RGB space and YUV space. Experimental results show that the paper realizes the pencil-drawing rendering of Dunhuang murals. In the rendering results, the murals are rough, damaged parts have been repaired, and the visual effects of the murals have been significantly improved. Although the mural has changed into the form of pencil-drawing and has added the pencil-drawing texture, its color distribution, light and shade have not changed, and its artistic value has been fully preserved.
【學位授予單位】：西北民族大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：K879.41;TP391.41

【參考文獻】

相關期刊論文 前10條

1 劉磊;陳越;盛蘊;張桂戌;;基于自適應噪聲模型和線積分卷積的鉛筆畫模擬[J];圖學學報;2015年01期

2 鄒柏賢;張然;苗軍;;Prewitt圖像邊緣檢測方法的改進[J];微電子學與計算機;2013年05期

3 王相海;秦曉彬;辛玲;;非真實感繪制技術研究進展[J];計算機科學;2010年09期

4 桑桑;郝鵬翼;丁友東;石蘊玉;;基于紋理和輪廓的鉛筆素描畫生成方法[J];上海大學學報(自然科學版);2010年03期

5 孫丹丹;唐棣;;應用運動模糊方法仿真鉛筆畫紋理[J];計算機工程與設計;2009年24期

6 許輝群;桂志先;;邊緣檢測技術砂體邊界識別方法研究[J];石油天然氣學報;2009年05期

7 王書文;駱巖紅;黃偉;楊筱平;賈建芳;;敦煌壁畫數(shù)字圖像修復中遇到的挑戰(zhàn)[J];西北民族大學學報(自然科學版);2009年02期

8 謝黨恩;趙楊;徐丹;;一種鉛筆濾鏡生成算法及其在GPU上的實現(xiàn)[J];計算機輔助設計與圖形學學報;2008年01期

9 李龍生;周經野;陳益強;劉軍發(fā);周仁琴;;一種改進的鉛筆畫的生成方法[J];中國圖象圖形學報;2007年08期

10 孫碩;黃東衛(wèi);;一種有效的基于區(qū)域的鉛筆畫方法[J];計算機工程與應用;2007年14期

，

本文編號：1984675